Saw-jointer.



W. E. GIBBS'.

SAWJOINTER. APPLlcAnoN FILED 110.216.1913. RENEwED MAR.9.1917.

Patented Aug. 21, 1917.

mwN.,

supporting bar.

. "maar Mirte WILLIAM n. ansias, or Lcan rornr, Wasnrns'ron..

"SAW-Jornrnn.

mareas.

Specification of Lettere Patent. VPteiijafttlgdl 21, 1917.

Application filed December 16, 1913, Serial No. 807,007. i Renewed March 9, 1917i Serial No. 153338.

T all whom, t may concern:

Be it known that l, lVILLIAM E. (wines,

a citizei'i et the United States, and a resi-l dent ot Oak Point, inthe `county of Cov'vlitz My invention is an improvement in saw? jointers, and has for its object to `provide a tool ofthe character specified, adapted form use in connection with saws, and having .means for pern'iitting the saws to be j ointed.`

In the drawings:` i

tool, I

Fig. Qis a top planl View,

Fig. l, and

Fig. ,4i is a liront view of the frameor rl`he j'n'esent embodiment ofthe invention consists of a frame or supporting bar 1 ol* suitable size and length, Land having each of its ends enlarged laterally at the top of the bar, to form a head 2, and each head is slotted, as shown at 3, transverselyot the i' A set` screw 4 is threaded through v bar. each head into` the slot, and a runner or guide plateisconnected with each head.

Eachy of therunners or heads 5 has-jai" central bearing 6, and'y one tace of each of the said runners is plane and straight,` and j a smooth faced hardened steel plate t is secured to the said face oi each runner'.

The plate '7 "extends longitudinally of the"` runner, andthe` ends of each ofthe 'plates are bent upwardly, as shown at 8, to prevent f 'shown' at 11, to engage the slot'` ot"A the adjacent head of the frame bar. Beyond the reduced portion 11 of the journal pin y the said pin is"` again reduced and threaded, j as shown at 12, anda Wing nut 13 is ,thread-r ed onto the portionl 12. It will be evident from the description that when the nuts `13 are loosened, the runners may be adjusted laterally with respect to the frame bar. `15 is tightened, and the set` screw 4; is

l/Vhen in adjusted position, the nut turned until the yend thereof .engages the :reduced portion l1 kof the journal pin,

et which the following is a speci-jl Figure 1 is a front view' of the improved f lVhennso engaged, the set screw absolutelj7 prevents upward movement of the runner. The portion 11 of each journal pin is of a Width to engage the slot 3, and it Will be noticedthat the'portion 9 of the journal pin is ofgreater length than the Width of thefrunner, so that the runnermay swing on the journal pins vWhatever the adjustment. The runner may thus be adjusted with respect lto the framer bar, Without clamping t'herunncn` to the frame bar to an extent Where it cannot swing With respect-to the frame bar.

rlhe frame bar is provided near each end with means for limiting the. swingingmovement' of;l the adjacent runner. means comprises a transverse rib 14 having at each end a lug 15 extending laterally with respectto the frame bar. The inner end-01" each runner is engagedbetween the lugs 15 of the adjacent rib, andit will be evident that the said lugs willV limit the swinging movement ofl the runner'.k

The swaging mechanism comprises a bracket consisting of three plates, 16, 17 17, 18-18, the latter plates being, sectional. The sections 17-17,2L are connected With the plate 16 bymeansof integral connections 19-19a, While 'the sectional plate 17--17a is connected to the plate 1534-18a by means ofintegral connection'sQO and 20a." The sections'of the plates `l7-l7`are in the same plane, andthe sectionsA of the plate 18418 are in the same plane and in a plane parallel to the plane of the'plate 16 and 1?172 The said l and the three plates are arranged in spaced relation.

The inner or under 'face of each section of the' plate 18-'18L is provided with a hardened facing plate 21, and the ends of the saidfacing 'platesl are secured to the plate sections 18-18abysoldering or brazing thev ends or the said spacing plates over the beveled endsot theplate sections. plate isarranged between 'the' sections of the plate le-'lSfLl The saidy plate comprises a body 23 having a longitudinal slot 241and` haring arms' 25 yot'set laterally, from'ithe body, and connected to the body by inclined portions 26.

The under faces of the arms 25 are beveled or inclined, as shown, and the gage plate is arranged with the lbody 28 between the meeting ends oi' the sections 18-18, and with the arms 9,5 above the upper faces of the sections. A 'Wedge 2'( is arranged between each The `gage arm 25 and the adj acentface'of the adjacent section 1S or 18a, and each wedge is longitudinally slotted, as shown at 2S. Each of the sections of the plate 18-18a is provided with a threaded stem 29 extending through ythe slot of the adjacent wedge and through a notch 30 in the adjacent arm 25, and each stemis engaged lby a nut 31 to hold the parts in place.

By moving-thea wedges longitudinally t0- ward or from the body of the gage plate, the said body may be yadjusted with respect to the engaging faces of the sections of the plate 18-18, and when adjusted to` proper position, the parts may be clamped by means of' the nuts 31. The file 32 is held between lugs 33 on the connections 20,EL and set screws 34 threaded through bosses 35 at the inner ends of the sections of the `plates 1,7-17?.

The lugs 33l engage the upper face of they file, while the set screws 34 engage the lowerv face. The file is thus clamped betweenthe y llugs and the set screws.

The gage pin 3.6 has a threaded portion 37, which passes through an opening in the holding plate integral with the connections 19.-'-193` before mentioned, and nuts 40 are threaded on to the pin above and below the plate. y By means of the nuts the pin mayV be adjusted to proper position. Theswagingl mechanism however, forms no, part ofthe present mechanism and for this reason is not Amore fully described.

The operation of the improved tool is as follows z. a y v f When it is desired to joint a saw, the parts are arranged assho'wn in; Fig. 1, the runners f v5 being vadjusted tol proper position by meansv of thevnuts 13 and the set screws 4. Thev deviceis arranged on the saw with the facing plates 7 touchingfthe points of the'teeth, andwith the file 32 held as shown between :the ,lugs 33-and theset screws 34. `lll/'hen the frame bar is moved along. the saw, the file .will dress the teeth thatare too long, Land the saw may be jointed in this manner.

The present invention is an improvement fover the construction forming the` subject matterof my co-pendingY application, Serial No. f614,8;36, filedlv March 16, .1911. It willv be `noted from: an inspection ofv Fig. 2, kthat each section kof plate 18,448 is provided with an extension 47 overlying the .upper edg Of theframe bar when the bracket is in place on the said bar.

It will be understood that the improved tool is particularly adapted for jointing those cross ycutsaws where the ends of the teeth are in the arc of a curve, and by means vof the said tool any unevenness or ununiforrnness of the bevel may be corrected, in order. that all of the points will be in the line of a perfect arc.

I claim:

1. In a device of the character specified, a frame bar provided at each end with a transverse slot, a runner having a straight edge for engaging the teeth of the saw and provided with a central bearing, a bolt passingy through the hearing and having a reduced plain portion for engaging the slot of the frame bar and a reduced threaded portion beyond said plain portion, a nut threaded on to the said threaded portion, and a set screw threaded through theframe bar into the slot for engaging the plain portion of Jthe bolt. 1

2. In a device of thecharacter specified, a framefbar provided at each end with a transverse slot, a runner having a straight edge for engaging the teeth of the saw and provided with a central bearing, a bolt engaging the bearing and the slot for clamping the runner toy the frame bar, and a set screw threaded through the frame bar at gne end of the slot and engaging the said olt. i

3. Ina device of the character specified,`

a frame bar, a runner at each end of the bar,`each runner having a straight edge, means for permitting the runners to be adjusted. laterally of the bar and to be fixed in adjusted position, the frame bar havinglugs at its side edgesand near v.each end for engagement by. the inner ends of therunners to limit the swinging movement thereof with (2411*)1eso'-f1r tlgispatentV may bqqbtaiped forl five, cents each, byadressing the Commissioner Vof Batnts,

Washington, Gf 

